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Accounts Receivable, net (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Receivables [Abstract]    
Trade accounts receivable, net of allowance of $12,421 and $2,528, respectively $ 99,620 $ 166,256
Allowance for trade accounts receivable 12,421 2,528
Unbilled revenue 32,815 40,033
Taxes receivable 32,849 34,163
Affiliated 608 3,966
Other receivables 3,017 1,773
Total accounts receivable $ 168,909 $ 246,191